Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 9 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2021   18:32:05   (   0.13, -75.20) (   0.70, -72.66)  288.99                80
 09/17/2021   06:53:33   (  -0.13, -75.21) (   0.46, -77.83)  299.63                80
 09/18/2021   06:31:54   (  -0.14, -75.21) (  -0.55, -73.24)  224.18                80
 09/19/2021   18:56:09   (   0.13, -75.22) (  -0.62, -78.45)  368.43                80
 09/20/2021   18:37:12   (   0.14, -75.23) (   0.45, -73.86)  156.16                80
 09/22/2021   06:58:39   (  -0.13, -75.26) (   0.70, -79.04)  430.32                80
 09/23/2021   06:37:01   (  -0.14, -75.27) (  -0.31, -74.44)   94.54                80
 09/24/2021   19:01:16   (   0.13, -75.29) (  -0.86, -79.65)  496.93                80
 09/25/2021   18:39:39   (   0.14, -75.31) (   0.21, -75.07)   28.33                80
 09/28/2021   06:44:47   (  -0.14, -75.37) (  -0.08, -75.65)   32.05                80